Can a flow be developing Hydrodynamically and be thermally fully developed?
In a thermally fully developed flow, the temperature profile will no longer change along the length of flow, Similarly the velocity profile.It means that there is no further growth of boundary layer. If the flow is fully developed (Hydrodynamic and thermal),it means that steady state is reached .
What is hydrodynamically developed flow?
In this region the velocity profile develops and thus the flow is called the hydrodynamically developing flow. After this region, the velocity profile is fully developed and continues unchanged. The velocity profile remains unchanged in the fully developed region.
What is the meaning of fully developed and developing flow region?
Fully developed flow implies that the velocity profile does not change in the fluid flow direction hence the momentum also does not change in the flow direction. In such a case, the pressure in the flow direction will balance the shear stress near the wall.
What is a advantage of turbulent flow?
A turbulent flow can be either an advantage or disadvantage. A turbulent flow increases the amount of air resistance and noise; however, a turbulent flow also accelerates heat conduction and thermal mixing. Therefore, understanding, handling, and controlling turbulent flows can be crucial for successful product design.
Which factors can cause turbulent flow?
Turbulence is caused by excessive kinetic energy in parts of a fluid flow, which overcomes the damping effect of the fluid’s viscosity. For this reason turbulence is commonly realized in low viscosity fluids.
Is laminar flow is used to increase the drag and reduce the lift?
The ideal would be laminar airflow across the entire surface of the wing with no sign of turbulence, which hinders flying performance by increasing aerodynamic drag and fuel consumption.
What is the application of Reynolds number?
The dimensionless Reynolds number plays a prominent role in foreseeing the patterns in a fluid’s behavior. The Reynolds number, referred to as Re, is used to determine whether the fluid flow is laminar or turbulent.